JP2023518620A - Frame assembly for folding simple chair - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame assembly for a foldable simple chair, in which a plurality of upper and lower supports forming a main frame of the simple chair are interlockably coupled to each other so that they can be folded and unfolded at once.

Description

TECHNICAL FIELD The present invention relates to a frame assembly for a foldable simple chair, and more particularly, a plurality of upper and lower supports are interlocked with each other so that it can be folded and unfolded at once to improve convenience in use. The present invention relates to a frame assembly for a folding simple chair that can stably support the load of a person.

In general, folding simple chairs are easy to carry and install because the frame that forms the main frame can be folded or unfolded. A foldable simple chair having such a structure can be easily used mainly in camping and various places where a chair is required.

Such a conventional foldable simple chair was previously filed by the same applicant in Korean Patent Publication No. 10-2017-0135201 (publication date: 2017.12.08).

Specifically, as shown in FIG. 1, a conventional foldable simple chair 1 includes an upper block 10 having a plurality of supporting bases 11 attached to its periphery so as to be able to turn up and down, and a lower part of the upper block 10. and a lower block 20 to which a plurality of supporting bases 21 are coupled so as to be able to turn vertically. Further, the upper block 10 is provided with a seat 30 on which a user can sit by connecting the corners to each end of the support bases 11 in a state where the support bases 11 are spread upward.

However, the plurality of support bases constituting the foldable simple chair 1 as described above are in a state of being hingedly coupled to the upper block 10 and the lower block 20 so as to be independently rotatable. As a result, when folding or unfolding the simple chair (see FIG. 2), there is a complicated problem that a plurality of supports must be rotated one by one.

The present invention has been devised to solve the above-mentioned problems, and a plurality of upper and lower supports forming the main framework of a simple chair are interlocked with each other so that they can be folded and unfolded at once. It is an object of the present invention to provide a folding cot frame assembly which is compact.

In order to achieve the above objects, the frame assembly for a folding simple chair according to the present invention comprises an upper bracket provided with a first through hole in the vertical direction, and a plurality of brackets radially arranged around the outer circumference of the upper bracket. , an upper support base whose one end is coupled via a hinge shaft and which can be turned up and down; a lower bracket having a second through hole communicating with the lower bracket; a plurality of lower supports arranged radially around the outer periphery of the lower bracket, one end of which is coupled via a hinge shaft and pivoted up and down; The first extension portion is rotatably coupled to the first fastening hole on the outer circumference of the upper portion by extending a predetermined length from one end of the upper support base. and an elevating shaft to which a second extension extending a predetermined length from one end of the lower support is rotatably coupled to a second fastening hole on the outer periphery of the lower part, for folding or unfolding the upper support. During operation, the lower support can be integrally folded or unfolded while being interlocked through the lifting shaft.

In this case, the upper and lower supports are provided in corresponding numbers so that they can be supported at 3 or 4 points, and can be folded or unfolded while turning in the same direction.

Further, each corner of the seat may be coupled to the upper support so that a user can sit on the seat during the unfolding operation.

Also, the upper support may be adjustable in length by a telescope method.

Also, the first coupling hole and the second coupling hole may be formed as elongated holes having a predetermined length so that the upper and lower supports and the elevation shaft can be interlocked.

The upper end of the center shaft of the tubular body is inserted into and fixed to the first through hole of the upper bracket, and the lower end of the center shaft is inserted into and passed through the second through hole of the lower bracket to expose the groove. A snap ring may be inserted into the lower bracket to allow idle rotation of the lower bracket.

In addition, the outer peripheral surface of the central shaft may be integrally formed with a flange portion having an insertion hole so that it can be fixed to the bottom surface of the upper bracket through a fastening member. .

The frame assembly for a foldable simple chair according to the present invention constructed as described above has at least two of the plurality of upper support bases held on both sides, and when folded or unfolded, the lower part is lifted through the elevating shaft. The supports can be folded or unfolded integrally while being interlocked. Simple unfolding and folding of the folding cot is thereby possible.

FIG. 11 is an exploded perspective view showing the frame structure of a conventional foldable simple chair; Fig. 2 is a perspective view of the foldable simple chair of Fig. 1 in which the frame is folded; 1 is a perspective view showing a folded state of a frame assembly for a foldable simple chair according to the present invention; FIG. 1 is an exploded perspective view of a frame assembly for a folding cot according to the present invention; FIG. FIG. 2 is a perspective view of the essential parts showing the folding and unfolding states of the frame assembly for the foldable simple chair according to the present invention; FIG. 2 is a perspective view of the essential parts showing the folding and unfolding states of the frame assembly for the foldable simple chair according to the present invention; FIG. 4 is a side cross-sectional view showing the folded and unfolded states of the frame assembly for the foldable easy chair according to the present invention; FIG. 4 is a side cross-sectional view showing the folded and unfolded states of the frame assembly for the foldable easy chair according to the present invention; 1 is a perspective view of a lift shaft according to the invention; FIG. 1 is a perspective view showing an unfolded state of a frame assembly for a folding simple chair according to the present invention; FIG.

Hereinafter, the configuration and operation of specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Meanwhile, in describing the present invention, a detailed description of related known functions or configurations will be omitted so as not to obscure the gist of the present invention.

In addition, when a part "includes" a component, it means that it can further include other components, rather than excluding other components, unless otherwise stated to the contrary.

Here, it should be noted that when the reference numerals are given to the constituent elements of each drawing, the same constituent elements are indicated by the same reference numerals as much as possible even if they are displayed on other drawings.

FIG. 3 is a perspective view showing a folding state of the frame assembly for the foldable simple chair according to the present invention, and FIG. 4 is an exploded perspective view of the frame assembly for the foldable simple chair according to the present invention.

3, a folding cot frame assembly 100 according to a preferred embodiment of the present invention comprises an upper bracket 110, an upper support base 120, a lower bracket 130, a lower support base 140 and a lift shaft 150 (FIG. 4). ) can be included.

A detailed description of the configuration of the present invention is as follows.

4 to 6, the upper bracket 110 may be provided with a first through hole 111 in the vertical direction of the body. A plurality of first joints 113 having hinge holes 115 may be radially formed around the outer periphery of the upper bracket 110 so that the upper supporter 120, which will be described later, can be joined.

One end of the upper supporter 120 is coupled to a plurality of first joints 113 arranged radially around the outer circumference of the upper bracket 110 through a hinge shaft 121 so that the upper supporter 120 can be rotated up and down.

Further, at one end of the upper supporter 120, the upper supporter 120 is extended by a predetermined length so that it can be rotatably connected to an elevation shaft 150, which will be described later, in a state where the upper supporter 120 is coupled to the hinge shaft 121. 1 extension 123 may be provided. The first extension part 123 may be provided with a pin fastening hole 123a.

The upper support base 120 can be connected to each corner of the seat 30 (see FIG. 1) when the upper support 120 is swiveled upward (see FIG. 10). A user can sit on it.

In addition, the upper supporter 120 may adopt a telescope method (not shown) so that the length thereof can be adjusted when the seat 30 is assembled.

Preferably, at least four upper supports 120 are radially arranged so as to stably support the user's buttocks.

Meanwhile, according to the present invention, the seat 30 may be manufactured separately and coupled to the end of the upper support 120 in an integrated or separate manner. Preferably, in the present invention, the seat 30 is integrated with the upper support 120 and is kept connected by a separate fastening member so that the folding simple chair frame assembly 100 of the present invention can be folded. In some cases, it can be folded to enclose the frame assembly 100 for transportation and storage.

Various known techniques related to the installation of the seat 30 and the adjustment of the length of the upper support 120 may be applied, and a detailed description of known functions or configurations may obscure the gist of the present invention. omitted to avoid

Referring to FIG. 7, the lower bracket 130 may be coupled to the lower portion of the upper bracket 110 so as to be idly rotatable about the central axis of the first through hole 111 . The lower bracket 130 may be provided with a second through hole 131 communicating with the first through hole 111 in the central axis of the body.

In addition, a plurality of second joints 133 having hinge holes 135 (see FIG. 4) may be radially formed on the outer circumference of the lower bracket 130 .

More specifically, describing a specific coupling structure of the upper and lower brackets 110 and 130, the upper end of the central shaft 137 of the tubular body is inserted into the first through hole 111 of the bottom surface of the upper bracket 110 and fixed. can be The lower end of the center shaft 137 is inserted through the second through hole 131 on the upper surface of the lower bracket 130, and a snap ring (C-shaped stop ring) 138 is inserted into and coupled to the exposed groove 137a. can. Accordingly, the lower bracket 130 can be idly rotated.

In this case, an insertion hole 139a (see FIG. 4) is provided on the outer circumference of the central shaft 137 so that it can be fastened and fixed to the bottom surface of the upper bracket 110 with a fastening member (not shown) such as a bolt. A flange portion 139 may be integrally formed.

8, one end of the lower support 140 is coupled to a plurality of second coupling portions 133 arranged radially around the outer periphery of the lower bracket 130 through a hinge shaft 141 so that the lower support 140 can be rotated up and down. can.

Further, at one end of the lower supporter 140, the lower supporter 140 is extended by a predetermined length so that it can be rotatably connected to an elevation shaft 150, which will be described later, in a state where the lower supporter 140 is coupled to the hinge shaft 141. Two extensions 143 can be provided. The second extension part 143 may be provided with pin fastening holes 143a (see FIG. 4).

Such a lower supporter 140 can serve as legs of a foldable simple chair by contacting the ground when it is spread at a predetermined angle (see FIG. 10).

In this case, it is preferable that four lower supports 140 are provided so that the floor to be installed can be supported at four points. In the present invention, four upper supports 120 and four lower supports 140 are provided, but in another example, the upper supports 120 and lower supports 140 are supported at three points. It can be changed and applied when it is provided to correspond to each of the three.

The upper supporter 120 and the lower supporter 140 can be folded or unfolded while rotating in the same direction. In this case, since the upper supporter 120 can rotate about the central axis of the first through hole 111, the upper supporter 120 rotates to the lower supporter 140 when the upper supporter 120 and the lower supporter 140 are folded. It can be folded and seated in the space between. It can thereby be folded and stored in a minimal volume during the folding operation (see Figure 3).

The folding or unfolding structure of the upper supporter 120 and the lower supporter 140 will be described in detail together with the elevation shaft 150, which will be described later.

4 and 9, the elevating shaft 150 connects the upper support 120 and the lower support 140 so that they can be interlocked together when the upper support 120 and the lower support 140 are folded or unfolded. can be connected to each other. The elevating shaft 150 may be vertically slidably coupled to the first through hole 111 of the upper bracket 110 and the second through hole 131 of the lower bracket 130 .

Specifically, an upper structure 151 having a first coupling hole 151a is radially formed on the upper periphery of the elevation shaft 150, and a second coupling hole 153a is formed on the lower periphery of the elevation shaft 150. A bottom structure 153 may be protruded radially. That is, the upper structure 151 and the lower structure 153 of the elevating shaft 150 are exposed to the outside of the first through hole 111 and the second through hole 131, and are formed in the middle of the elevating shaft 150 having a predetermined length. The parts are coupled in the first through hole 111 and the second through hole 131 so as to be capable of sliding reciprocation.

In this case, the upper structure 151 and the lower structure 153 of the lifting shaft 150 may be provided corresponding to the number of the upper supports 120 and the lower supports 140 .

The elevating shaft 150 having such a structure is rotatably coupled to the first fastening hole 151a of the upper structure 151 through the fixing pin 125 by the first extension portion 123 extending by a predetermined length from one end of the upper support 120 . can be

A second extension part 143 extending by a predetermined length from one end of the lower supporter 140 may be rotatably coupled to the second fastening hole 153 a of the lower structure 153 through a fixing pin 145 . .

In this case, the first coupling hole 151a and the second coupling hole 153a may be formed as elongated holes having a predetermined length so that the upper supporter 120, the lower supporter 140, and the lifting shaft 150 can be interlocked.

That is, the first fastening hole 151a and the second fastening hole 153a of the lifting shaft 150 and the pin fastening holes 123a and 143a of the upper support 120 and the lower support 140 connected thereto are all circular holes. In this case, the upper supporter 120 and the lower supporter 140 are completely fixed to the elevation shaft 150, so that the elevation shaft 150 cannot slide and reciprocate. That is, the upper support 120 and the lower support 140 cannot be rotated.

Accordingly, in order to enable the turning operation of the upper supporter 120 and the lower supporter 140, any one of the first and second fastening holes 151a and 153a and the pin fastening holes 123a and 143a should be It must be formed with long holes.

In this case, in the present invention, an example in which the first coupling hole 151a and the second coupling hole 153a are formed as elongated holes is illustrated and described, but the present invention is not limited thereto, and the first coupling hole 151a and fixing pin fastening holes 123a and 143a provided in the first extension part 123 and the second extension part 143 instead of the second fastening hole 153a can be changed and applied when they are formed as elongated holes. .

The frame assembly 100 for a folding simple chair according to the present invention having the above structure can be folded (see FIG. 7) or unfolded (see FIG. 7) with at least two of the plurality of upper supports 120 held on both sides. 8) During operation, the lower supporter 140 can be interlocked through the elevation shaft 150 to be integrally folded or unfolded. This allows easy unfolding and folding of the folding cot.

Although the present invention has been described above with reference to specific specific embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the technical spirit of the present invention. Modifications are of course possible.

100: Frame assembly 110: Upper bracket 111: First through hole 113: First connecting part 115: Hinge hole 120: Upper support base 121: Hinge shaft 123: First extension part 123a: Hole 125: Fixing pin 130: Lower part Bracket 131: Second through hole 133: Second joint 135: Hinge hole 137: Center shaft 137a: Groove 138: Snap ring 139: Flange 139a: Insertion hole 140: Lower support base 141: Hinge shaft 143: Second extension Part 143a: Hole 145: Fixing pin 150: Elevating shaft 151: Upper structure 151a: First fastening hole 153: Lower structure 153a: Second fastening hole

Claims (7)

an upper bracket provided with a first through hole in the vertical direction;
a plurality of upper supports arranged radially around the outer periphery of the upper bracket, one end of which is coupled via a hinge shaft and pivoted up and down;
a lower bracket having a second through hole that is idly rotatably coupled to the lower part of the upper bracket with respect to the central axis of the first through hole and communicates with the first through hole;
a plurality of lower supports radially arranged on the outer periphery of the lower bracket, one end of which is coupled via a hinge shaft and pivoted up and down;
A first extension portion is rotatably coupled to the first through hole and the second through hole so as to be vertically slidable, and is extended by a predetermined length from one end of the upper support base to the first fastening hole on the outer periphery of the upper portion. an elevating shaft coupled to a second fastening hole on the outer circumference of the lower portion and to which a second extension extending a predetermined length from one end of the lower support is rotatably coupled;
A frame assembly for a foldable simple chair, wherein when the upper support base is folded or unfolded, the lower support base is interlocked via the elevating shaft and integrally folded or unfolded. The upper support base and the lower support base are
A frame assembly for a foldable simple chair according to claim 1, wherein the frame assembly is provided in corresponding numbers so that it can be supported at three or four points, and is folded or unfolded while rotating in the same direction. The upper support base includes:
2. A folding cot frame assembly according to claim 1, wherein each corner of the seat is joined to allow a user to be seated during the unfolding operation. The upper support base is
4. A frame assembly for a folding cot as claimed in claim 3, which is telescopically adjustable in length. The first fastening hole and the second fastening hole are
2. The frame assembly for a foldable simple chair according to claim 1, wherein an elongated hole having a predetermined length is formed so that the upper and lower supports and the lifting shaft can be interlocked. The upper end of the central axis of the tubular body is inserted and fixed in the first through hole of the upper bracket,
The lower end of the central shaft is inserted through the second through-hole of the lower bracket, and a snap ring is inserted into and coupled to the exposed groove,
2. A folding cot frame assembly according to claim 1, wherein said lower bracket is idly rotatable. On the outer peripheral surface of the central shaft,
7. The frame assembly for a foldable simple chair according to claim 6, wherein a flange portion having an insertion hole is integrally formed on the bottom surface of the upper bracket to be fixed through a fastening member.

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